The link to the list of sites, which I use very occasionally, is about 140 pixels wide and in a nice accessible location near the left margin (though for some reason not flush left).
The link to the inbox, which I use very often, is about 35 pixels wide and awkwardly located in a middling location.
This is backward. It's a major drop in usability from the former inbox access which had the inbox as a nice wide button and the first thing on the left (though for some reason not flush left either) whenever messages were pending.
(Greener colors for easy to click, brighter colors for more useful. If you see bright red and dark green, you're doing it wrong. Apologies to the color blind in the audience.)
Please make the inbox button wider. It really needs to be wider than the site list since it's more useful, at least when there are unread messages.
I'm unsure about the achievements button (which also has an unrecognizable graphic — is that a bar chart? What does this have to do with achievements?) since I don't know yet what use that list is.